Anchor



March 5, 1935.

J. E. ANDERSON v ANCHOR Filed Oct. 23, 1935 l ,ly, the thin edges of thematerial, particularly ad- Patented Mar. 5, 1935 aren't Omar ANCHOR,

John E. Anderson, Chicago, 111., assignor to Plibrico JointlessFirebrick Company, Chicago, 7

111., a corporation of Application October 23,

6 Claims.

5 struction, Serial "No. 591,245,11led January 5, v1932,

I have disclosed a furnace arch construction comprising a of refractorymaterial supported by anchorsembedded inthernass, these anchors being ofapproximately pyramidal form and having considerable upward taper. Whilethe anchors of my copending application have-proved to be highlyeflicient in use with various kinds of refractory, when ananchor of thisconstruction is employed with refractory material which is unusuallybrittle or has a tendency to break readijacent the top of the anchor,are apt to crack and break away. Also, with an anchor having smoothsurfaces with a considerable upward inclination, there is a wedgingeffect exerted by the anchor on the suspended mass of refractory which,under unfavorable conditions, may tend to cause cracking of the mass.

The instant invention is in the nature of an improvement over the anchordisclosed in my above identified copending application. One of the mainobjects of my invention is to provide an anchor which avoids theformation of thin edges in the mass of the refractory, such as would beapt to result in cracking and breaking away of the refractory. A furtherobject is to provide an anchor which has but slight taper and, when inuse, has interlocking engagement with the mass in such manner as tosupport the latter effectively by means of rounded elements of adequatecrosssection and mechanical strength while avoiding appreciable wedgingaction such as might tend to cause cracking of the mass of refractory.Further objects and advantages of my invention will appear from thedetail description.

In the drawing Figure 1 is a perspective view of an anchor embodying myinvention;

Figure 2 is an end view of the anchor;

Figure 3 is a plan view of the anchor;

Figure 4 is a fragmentary sectional view through a furnace archstructure and an anchor embodying my invention applied thereto.

The anchor of my invention comprises a neck 1 of rectangular shape inplan, provided with spaced transverse apertures 2, and a body 3depending fI'OITl the neck and also of rectangular shape in plan, thisbody being of greater extent than the neck. The body 3 tapers upwardtoward the neck, the lateral taper of the body being Illinois 1933,Serial No; 694,737 (01. 72-101 slight and the lengthwise taper of thebody being relatively great. Body 3 is provided, at each side thereof,witha rounded rib or projection 4, extending lengthwise of the bodyjandwith rounded grooves 5 and 6 extending from theprojection 5 4 to thebase of the body and to a rounded shoulder lwhich merges into the neckat the side thereof. It willbe noted that the grooves 5 and 6 merge intothe rib or projection 4 and the shoulder 7 and define therewithroundedcorrugations 10 of appreciable cross-section, The oodyis fur therprovided, at each end of the base thereof, with a terminal element 8,which is untapered upward and is of considerable vertical thickness soas to possess sufficient mechanical strength for 5 supporting the loadimposed thereon. Preferably, the anchor is formed of refractory the sameas that of the mass which is to be supported'bythe anchor, and is bakedor fired to the re uisitegdegree of hardness. 20 InFig'ure l Ihave'shown an anchor embodying my invention as used in a furnace archstructure comprising supporting I beams a and a mass of refractory 'r.In constructing the arch, a plurality of suitably spaced anchors aresupported by means of rods I) inserted through one of the openings 2 ofthe respective anchors, these rods resting loosely upon the lowerflanges I of the I beams a and providing rollers which accommodatemovement of the anchors lengthwise of the beams to accommodate expansionand contraction of the refractory mass r, it being noted that theanchors are also freely slidable lengthwise of the respective rods forthe same purpose. A suitable form is disposed beneath a the anchors andthe spaces between the anchors are then filled in with refractorymaterial in a plastic condition, which is tightly packed between theanchors so as to provide rounded ribs 9 of considerable cross-sectionwhich fit tightly into the grooves 5 and 6 of the respective anchors,and cooperate with the projections 4 and the lateral base portions ofthe anchors for supporting the refractory mass. In this manner, therefractory mass is provided with rounded ribs which interlock with theprojections of the anchors for supporting the mass while avoiding theformation of thin edges such as might result in cracking and breakingaway of the refractory. The end elements 8 at the base of the anchoravoid the formation of thin edges in the refractory and possess amplemechanical strength to support the load imposed on these elements. Itwill be noted that the lengthwise taper of the anchor, even thoughmaterially greater than to avoid subjecting the suspended mass ofrefractory to wedging action of sufficient extent to tend tocausecracking of the mass. In applying the anchor, the supporting rods b maybe inserted through either of the two superposed apertures 2, thusproviding convenient means for vertical adjustment of the anchor, wheninitially applied, to suit requirements.

What I claim is:-

1. As a new article of manufacture, an anchor for use in supportingmasses of refractory and the like, said anchor being formed ofrefractory material and comprising a neck and a body dependingtherefrom, said body tapering in length and width toward the neck withthe taper in length greater than the taper in width, the body beingprovided at the sides thereof 'with spaced lengthwise projectionstransversely.

rounded and defining rounded rooves of considerable width for receptionof the material of the mass to be supported. a

2; As a new article of manufacture, an anchor for use in supportingmasses of refractory and the like, said anchor being formed of re-'fractory material and comprising a neck and a body depending therefrom,said body tapering in length toward the neck and being provided at it'ssides with spaced lengthwise projections of considerable width, saidprojections being transversely rounded and defining rounded grooves forreception of the material of the mass to be supported, said groovesbeing substantially equal in width to the projections.

3. As a new article of manufacture, an anchor'for use in supportingmasses of refractory and the like, said anchor comprising a neck ofapproximately rectangular shape in plan and a body depending from theneck and of approximately rectangular shape in plan, the body being ofgreater extent in plan than the neck and tapering upward toward thelatter with the lengthwise taper of the body greater than its transversetaper, said body being provided at the sidesthereof with roundedprojections extending lengthwise of the body and having, at the ends ofits base, untapered terminal elements of appreciable vertical thickness.

5. As a new article of manufacture, a refractory anchor for usein'supporting masses of refractory and the like, said anchor comprisinga neck provided with a plurality of vertically spaced transverseapertures, and a body'depending from said neck, said apertures beingspaced outward beyond the body.

6. In combination, supporting means, a refractory anchor suspended fromsaid means and comprising a body tapering toward the supporting means,and a mass of refractory initially applied ina plastic condition andsurrounding the anchor, said anchor being provided with rounded groovesof considerable width and said mass being forced into said grooves andforming interengaging elements of rounded cross-section, said elementscooperating with the anchor to support the mass by means of the anchor.

JOHN E. ANDERSON.

